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Compact Cage Antenna : by: Vladislav Shcherbakov, RU3ARJ Everyone knows "classical" quad antenna. Its perimeter is equal to wavelength. Each side of the quad is 1/4 wavelength. Amplification of the "classical" quad antenna is 3dBi, input impedance (in a free space) is close to 120Ohm. Good antenna but the size! It is possible to reduce its size by folding it in a "cage"
shape. The simplest cage in which the antenna may be transformed is
a cage of 10 sections 0.11 wavelength each. The Compact Cage Antenna
(CCA) gain is 1.5dBi and input impedance is close to 50Ohm. PDF file, 170 KB (ANTENTOP012009, pp: 32 35) Files MMANA: Contents for AntenTop 01 2009
Vladislav Shcherbakov, RU3ARJ
Contents for AntenTop 01 2009






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Last Updated: March 29, 2016 9:05 

